ZoneFirst SPRD-12X8 Damper Els PW 17895 6" WC to ensure the

6" WC to ensure the sequence of operation meets manufacturer safety standards

this replacement valve assembly ensures precise flow control and reliable zone isolation

providing flexibility for different loop lengths and voltage drop requirements

ensuring a secure and leak-free fit when properly seated in the pilot bracket

Designed for high-reliability flow reversal

ZoneFirst SPRD-12X8 Damper Els PW 17895 6" WC to ensure theThe ZoneFirst SPRD 12X8 is a professional grade barometric static pressure regulating damper designed to maintain optimal bypass airflow in multi zone HVAC systems. As the direct replacement for the PRD 12X8, this 12" wide by 8" high rectangular unit utilizes a counter balanced weighted arm to automatically bleed off excess static pressure when zone dampers close. This critical function prevents high velocity air noise, protects the heat exchanger